tcprules and subnet

[LUIZ CARVALHO]

Hello!
i need to allow only a subnet with 8 IP addresses to relay through my
host...
(192.168.8.176 mask 255.255.255.248)
how should i configure tcp.smtp?

should i use:   192.168.8.176/29:allow,RELAYCLIENT=""   ?

Thank you,

Luiz Carvalho
Brazil